Tuesday, January 13, 2015

Preserving Write-Once DVDs

Preserving Write-Once DVDs: Producing Disk Images, Extracting Content, and Addressing Flaws and Errors.  (PDF). An Analytic Report by George Blood Audio Video Film for the Library of Congress. April 2014.
Report on technical issues in reformatting projects for the Library of Congress with an overview of the range and extent of the issues.
  • Most specialists agree that optical disc media, although inexpensive and easy to use, does not support long-term data management.
  • The estimated shelf life of a CD-R or CD-RW is between five and ten years.
  • The lifespan can be lengthened or shortened by environmental and technological factors.
  • Of the 500 discs reformatted, 10% were problematic
  • The report provides brief reviews of all of the tools used to clone discs.
  • Shows the Structure of a VIDEO_TS folder


Thorsted said...

I am curious on what others are doing to preserve DVD's. It seems the only way to preserve all the content is to save the disk image. If you extract the video you have potential to loose the menu interactivity.

Chris Erickson said...

We use the Millenniata M-Discs as a replacement for CDs and DVDs. We burn new content on the M-Discs, as well as using them when we are reformatting old CDs and DVDs.